Can't add keyframes to Parameters

[photosbyiki]

Keyframes seem to be added but the values don't seem to be affected.

Can you clarify what you mean by this? And have you used the Keyframes rollout in the operator to tell tyFlow how to synchronize the keys to the particles?

first of all thank you for your reply.

What I mean by this is that I set the timeline slider to  frame zero and I add a value of100 in the Spread parameter and set a keyframe.  Keyframes seem to be set as I can see a red outline on the parameter. Then I move the slider to frame 20 and change the value to 0 and set another keyframe.  I scrub the timeline and the value remains at 0.

As for your other question with regards to the "Keyframes" I tried changing it from Absolute, Event Age and Particle Age.  None of them seem to make a difference.